Roller



FIG. 1 is an enlarged perspective view of one side of a roller showing my new design;

FIG. 2 is an end elevational view thereof;

FIG. 3 is a side elevational view of the side opposite to that shown in FIG. 1;

FIG. 4 is a side elevational view of the side shown in FIG. 1; and

FIG. 5 is a cross-sectional view taken along lines 5--5 of FIG. 2. 

The ornamental design for a roller, as shown. 